Entanglement of nuclear spins in spin-blocked quantum dots

Mikio Eto, Takashi Ashiwa, Mikio Murata

研究成果: Conference article査読

2 被引用数 (Scopus)

抄録

We theoretically study unique properties of nuclear spins in quantum dots: an entanglement derived by the spin flip of electrons through hyperfine interaction. The correlation among nuclear spins develops gradually in the presence of the electric current accompanied by the spin flip. This situation is relevant to a leakage current in spin-blocked regions where electrons cannot be transported unless their spins are flipped. The correlated state of nuclear spins drastically enhances the spin-flip rate of electrons and hence the leakage current. By numerical calculations, we show that the enhancement of the current is observable when the residence time of electrons in the quantum dots is shorter than the dephasing time T*2 of nuclear spins.

本文言語English
ページ(範囲)426-429
ページ数4
ジャーナルPhysica E: Low-Dimensional Systems and Nanostructures
22
1-3
DOI
出版ステータスPublished - 2004 4
イベント15th International Conference on ELectronic Propreties - Nara, Japan
継続期間: 2003 7 142003 7 18

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 原子分子物理学および光学
  • 凝縮系物理学

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